Nato warns signs of Russian troops and hardware heading to Ukraine border

Instead, they have celebrated a day of national unity here. And yet the nervous tension continues.

'We have not seen any withdrawal of Russian forces', Nato's Secretary General Jens Stoltenberg has warned.

In fact just the opposite - he says there are signs of more Russian troops and hardware heading for the Ukrainian border. An assessment echoed by a senior Ukrainian government official to this programme.

Moscow had said earlier it was pulling back troops from positions in Crimea and has warned it would retaliate if the British government imposes sanctions.